Rotary air-compressor



A. LOKEN.

ROTARY AIR COMPRESSOR.

APPLICATION FILED JAN.I5.19I9.

Patented Nov. 11, 1919.

Shoe/who; HudrewlJo/iem ANDREW LOKEN, OFHARVEY, NORTHDAKOTA.

ROTARY AIR-COMPRESSOR.

Specification of Letters-Patent.

Patented Nov. 11, 1919'.

Ap lication-flied Jannary'15, 1919: Seria1No.-271,241.

To all whom it may concern:

Be it known that I, ANDREW Lama; a

citizen of Norway, residingat Harvey in the county of lVells and State of North" Dakota, have invented new andusefurImprovements in Rotary Air-Compressors, of which the following is a specification.

This invention relates to a rotary air com pressor the object in view being to produce a high speed powerful andpractical rotary air compressor involving a number of cyl inders which are mountedupon and carried by a rotary support, the latterbeingdriven by an engine or motor of any kindand the air compressed by all ofthe cylinders being directed to a common receiving manifold and conducted therefrorn to a storage tank" or reservoir.

One of the main features of theinven tion' tion, combination and arrangement herein fully described, illustrated and claimed.

In the accompanying drawings Figure 1 is a-front elevationofthe-rotary air compressor, certain parts being broken away in'sectiomfor better illustration.

Fig. 2 is a vertical transverse section through the sametaken adjacent tothe ro tary shaft of the compressor.

The rotary air compressor contemplated in this invention comprises a suitable supporting base A which is shown as embodying two substantially A shaped members having bearings 1 at the top thereof in which is journaled the rotary compressor as illustrated in Figs. 1 and 2 of the drawings. Mounted in fixed relation to and surrounding the shaft 2 is a rotary support 3 embodying a rim as shown. Carried by said rotary support is a circular series of air compressing cylinders 4 arranged equal distances from the center of said shaft 2. The cylinders 4 are supported at their inner ends by means of a spider 5 which may be common to all of the cylinders as shown in Fig. 1. Each cylinder is supported at its outer end by means of a U-shaped bracket 6 the extremifties oftlie'arms of which are bent outwardly to form seats 7, the latter being secured to the rotary support 3 by fastening means 8.

Mounted for reciprocatory motion in each of the cylinders 4 is a piston 9 having a rod 10 whicheXtends through a stufling boX 11 in 'the outer cylinder head and has fixedly secured or' related thereto a slotted cross head 12, the slot in the cross head extending transversely or at a right angle to the 1011- gitudinal axis of the rod 10. The actuating means foreach piston consists of a short crank shaft 13 having a crank 14 provided with a crank pin 15 which works in the respective slotted cross head 12, the pins at 15 being preferably surrounded by an anti-frictioriroller 16 for an obvious purpose. Each piston actuating crank is balanced by means of a pendulous weight 17 which always hangs in a certain position and prevents the crank shaft 13 from rotating. Each crank shaft 13 is journaled in a supporting bracket 18 which is substantially V-shaped and secured'to the rotary member 3 by means of fastening means 19.

Each of the air'compressing cylinders 4 ispro'vided in both heads or ends thereof with an automatic inlet valve 20 and is also provided-in the opposite ends thereof with airouflemheck valves 21 which communicatewith a manifold pipe22 from which a nianifold 'connection 23 extends inwardly to the rotary shaft 2; The compressed air fronnallof themanifold connections 23 is delivered to a non-rotary receiving manifold 24 through" a longitudinal passage or bore'at in the shaft 2 as shown in Fig. 2.

The shaft 2 rotates within the receiving manifold 24 and the latter is provided with holes 26 which intersect the passage 25 and deliver the air therefrom to the receiving manifold 24. From the manifold 24, the compressed air is delivered through a discharge pipe 27 to a compressed air storage tank or reservoir.

By means of the construction and arrangement described it will be seen that I have produced a high speed rotary air compressor in which any desired number of air compressor cylinders may be mounted upon a common rotary support which together with the cylinders and other connections hereinabove described constitutes a fly wheel. Thisenables the rotary air compressor to be driven economically by a comparatively small motor.' The number of air compressing cylinders may be increased or diminished according to the capacity of the air compressor.

1 5, I do not desire to be restrictedto the ex-' act arrangement shown and described it beingobvious that the rotary. air compressor is susceptible of many changes in the form,

, claim is 1. A rotary air compressor, comprisinga base, a rotary support, a rotary shaftjour naled upon said base and having said rotary support fast thereon, a plurality of air compressing cylinders carried by said rotary support with their longitudinal axes radial to said-shaft, reciprocatory pistons in said cylinders, rods attachedto said pistons and extending radially outward therefrom, slotted cross-heads on said piston rods, balanced piston actuating cranks having a journaled mounting upon and carried by said rotary support and having crank pins work- 'ing in said slotted cross-heads, and a compressed air discharge pipe in communication with all of said cylinders.

2. A rotary air compressor, comprising a base, a rotary support, a rotary shaft jour- 1 naled upon said base and having said rotary V support fast thereon, a plurality of air compressing cylinders carried bysaid rotary support with their longitudinal axes radial to said shaft, reciprocatory pistons in said cyl- "inders, rods attached to said pistons and ex-v 40 tending radially outward therefrom, slotted cross-heads on-saidpiston rods, balanced piston-actuating cranks having av journaled mounting uponfand carried by said rotary support and having crank pins working in Copies of this patent may be obtained for said slotted cross-heads, a dischar e pipe, said shaft having an inclosed longitudinal passage'in communication with said pipe, and air connections between said passage in the shaft and the air compressing cylinders.

3. A rotary air compressor, comprising a base, a rotary support, a rotary shaft journaled upon said base and having said rotary support fast thereon, a plurality of air compressing cylinders carried by said rotary support with their longitudinal axes radial to said shaft, reciprocatory pistons in said cylinders, rods attached to said pistons and extending radially outward therefrom, slotted cross-heads on said piston rods, balanced piston-actuating cranks having a journaled mountingupon and carried by said rotary support and having crank pins working in said slotted cross-heads, and a compressed air discharge pipe in communication with all-of said cylinders, said pipe being non-rotary and said shaft being rotatable in said pipe.

, 4. A rotary air compressor, comprising a base, a rotary support, a rotary shaft journaled upon said base and having said rotary support fast thereon, a plurality of air compressing cylinders carried by said rotary support with their longitudinal axes radial to said shaft, reciprocatory pistons in said cylinders, rods attached to said pistons and extending radially outward therefrom, slotted cross-heads on said piston rods, balanced piston actuating cranks having a journaled mounting upon and carried by said r0- tary support and having crank pins work ing in said slotted cross-heads, and a compressed air discharge pipe in communication with all of said cylinders, each of said cranks being balanced and prevented from rotating by apendulous Weight fast thereon. In testimony. whereof I aflix my signature.

ANDREW LOKEN.

five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

